Concentrator



' Aug. 6, 1929., 1

V. P; ROE

CGNCENTRATOR 'Filedvocn 22, 1927 4 sheets-sheet 1 ,www

o .2, Ik e Nb NN WN .Q o k m umu w 5N mw. NN E Aug. 6, 1929. V, EROE 1,723,711

` CONCENTRATOR Filed 0G13.k 22, 1927 4 Sheets-'Sheet 2 4 ttomgy Aug.6,1929. RWE 1,723,711

CONGENTRATOR Y Filed Oct. 22, 1927 4 Sheets-Sheet 5 25 /IZ- f/ Inventar Aug. 6, 1929. v PQ ROE 1,723,711

, CONCENTRATOR V Fifl/edv'Oct. 22, 1927 4 Sheets-Sheet 4 Patented Aug. 6, 1929.

PATENT OFFICE.

VIRGIL P. ROE, OF CLAEKSTON, WASHINGTON.

ooNoEN'rRAToR. i

Application filed October 22, 1927.

The present invention relates to a concentrator and has 'ifor its prime object to provide a concentrating apparatus which is particularly adapted for separating gold from sand, gravel, rock, and other 'foreign matter.

` Another 'Very important object of the invention resides in the provision of an apparatus el? this nature which is simple in its construction, compact andeonvenient in its arrangement ol parts, thoroughly etlicient and reliable in its operation, and otherwise well adapted for the purpose for which it is designed. i

1With the above and numerous other ohjects in View as will appear as the description proceeds, the invention resides in certain novel features ot construction, and in the combination and arrangement o't parts as will be hereinafter more fully described and claimed.

1n the drawing z- Figure l is a side elevation of the apparatus embodying the l'eatures of my invention and showing portions broken away and in section,

Figure 2 is a top plan View of the main concentrator pan.

Figure 3 is a sectional `View therethrough taken substantially on the line 3-3 of Figure 2,

Figure 4 a fragmentary top plan View .showing a portiono the second concentrator pan, i i

Figure 5 is an enlarged detail section taken substantially on the line 3u-5 of Figure Il,

Figure 6 .is a section. taken suhstanti ally on the line GMG olfFigure l, y

Figure 7 is a fragmentary top planview showing the slnice box and screen, i

Figure 8 is a fragmentary detail perspecti ve showing a portion of the trough which is disposed under the same, y

Figure 9 is a perspective VView et the shaker trough showing one end only,

Figure 10 is an enlarged detail section taken substantially on the line 10H10 oit Figure 1,

Figure 11 is a top plan `view oi the lower end olf the shaker trough,

Figure 12 is a longitudinal vertical. section therethrough,

Figure 13 is an enlarged detail, View ot the gearing, and l Figure 14 is an enlarged detail View of the lower end ol the rocker.

Serial No. 227,993.

`Referring to the drawings in detail,l it will he seen that the nunleral 5 denotes the base comprising two spaced parallel beams or oli any other suitable formation.` A pair o1 staniilards 6 rise from one end of the hase 5 and a rod 7 extends through openings 8 thereof so that the rod may be adjusted to dilierent desired heights. A 'Frame S) is attached to an elongated open-ended sluice boxv 1() on the bottom of which are mounted transverse ripple slats 1 1 connected together in groups by tie rods 12. These groups ot ripple slat.' are held in the sluice hoX 10 against longitndinal movement therein by means of lugs 13. This sin ice box inclines downwardly from the rod 7 and the lower end thereof is formed 'with a rack 14. A standard 15 rising troni the base 5 has pivotcd to its upper end as at 1G a rocker 17 the upper end of which formed with a gear segment 18 meshing with the rack 141. The lower end of the rocker 17 is hi'furcatcd as at 19 to forni a slot in which operates a cam 20 on a shaft 2G operatively connected hy means of gears 24 and 25 and a belt 22 with a prin'ie mover such as a water motor Q3.

A pinion 24 is mounted on the shait l and meshes with a gear 25 on a shaft 26. A screen 27 is pivotally engaged as at 2S with the lower end of the sluice box 10 and inclines downwardly therefroni being rockahlyY mounted in an adjustable manner as at #-51 to standards 32 which are rockahly mounted as at to section (a of a trough 34. The section 1: inclines in an opposite direction to thescrcen 27. The other section Y) ol the trough 34- inclines in the same direction with the screen 27. The screen terminates at the juncture of the two sections a and o. Th trough 31 may be supported by suitable standards 36 or in any other preferred manner.

A frame 37 is rockahly mounted at its lower end on the hase 5 as at 538 and is ot an inverted U-shaped forn'iation. 1n the center ot the top portion of the frame 57 there is jonrnaled a pin39 depending from a disc t() which rests on a disc 4], lixedly mounted on top of the fii'alne 37. A pan 42 is mounted conceiit-iifally on the disc 40. This pan V:is ol a circular construction and 'comprises a bottom c and a rim d. A dialnetrically extending cross member 43 mounted :in the rim d but is not connected thereto in any Way.` A cross support la is fixed to the upper edge of the rim d to extend diametrioallyl thereacross and a stub shaft 45 is journalled therethrough a distance from the center of the pan 42, A plurality of arcuate concentric blades 4G have their ends attached to the cross member 43. The bottom c is provided with an opening e adjacent the rim d and the rim l has an outlet nipple f extending outwardly therefrom. -A connecting rod 47 is pivotally engaged as at 48 with the upper portion of the frame 37 and eccentrically engaged as at 49 with the gear 25. A connecting rod 5() is pivotally engaged as at`5l with the rim (Z of the pan 42 and pivotally engaged as at 52 with the rocker 17. An arm 53 is fixe-d to the stubshaftand extends beyond the side of the pan as is clearly illustrated in Figure 2 to terminate beyond the rim thereof anda connecting rod 54 is engaged with the outer end of the arm 58 and pivotally engaged as at 55 with the rocker l7 above the pivot 52 so that the throw of the connecting rod 54 is not as great as that of the connecting rod 50.

When the prime mover 23 is in operation it will be seen that the frame 37 rocks and the pan 42 i'noves therewith and at the same time the pan .is oscillated by the rod 50 and the blades are oscillated by the rod 54. The lower end of the trough section a terminates above the upper portion of the pan 42 which is normally inclined in the same direction with the cross section a as is clearly illustrated in Figure l. A shield 5G is mounted on the rim (l of the pan 42 about the outlet nipple f.

An elongated shaker trough 57 extends fronithe outlet e of the pan 42 to above a pan 58. This trough 47 is connected by a rod 59 with an eccentric cam 20 on the shaft 21 andV reciprocates on a roller 60 mounted on a supporting structure 6l. Water is led to the upper end of the trough by a conduit 62. The structure of this trough is illustrated to advantage in Figs. 9, ll and l2 wherein it will be seen that the side walls of the vtrough are corrugated as at g while the bottom is of an inverted V-shaped formation `in cross section as at L. In the troughs formed between the bottom L and the side walls g at the lower end of the shaker trough there are formed outlet openings j to lead the material into the pan 58. A rod 64 extends up into each of the openings to prevent clogging of these openings and stops 65 are located adjacent the openings.v

The pan 58 is identical in constructionwith the pan 42 except for size and is mounted on a rockable frame G6. In addition to the analogous striicture of this pan 58 to the pan 42 there are also provided as is shown in Figure 4, a plurality of comb'teeth 68 rising from the bottom between the outlet and the blades 46 therein.. Suspended from the pan 58'to move therewith is a pan 69. A connecting rod is engaged with the shaker trough 57 and with the pan 58." A

connecting' rod 7l is connected with the arm 53 of the pan 58 and with a rocker 72 copnected with the gear 25 by rod 72. A rod i 3 is engaged with the rocker 72 and with the rocker frame 66.

This eoncentrator is to be worked in connection with an ordinary sluice box, the gravel going over the sluice box enters into the sluice box l0 of my apparatus. The slope and movement of this sluice box l() causes all the line gold to break loose from rocks to which it may be held by mud or clay and the line gold settles behind the ripple slats 1l. Gold such as flour and Hake will not settle in this way so that it will pass over the lower end of the sluice box onto the screen 27 and will be separated from the gravel and rock hy the screen, the gravel and rock passing ont through the section b while the gold, sami and line gravel flow down the section a of the trough 34. The mixture from the section a enters the pan 42 which pan turns and quivers while the blades move therein as explained thereby settling the flake and flour gold to the bottom while the blades keep the sand loose.' The blades cause a small gap to be formed in the sand which allows water to seep in making the sand soft and easy so that the gold may settle to the bottom otl the pan. At the lower end of the pan are the outlet c and the outlet The outlet f maintains the valuable sand in the pan so that it may flow downwardly through the outlet e into the trough 57 and move along this inclined trough to the lower end thereofl by the movement which is imparted thereto as heretofore explained. This sand reaches the pan 58. The heavy corrugations in the side walls of the trough 57 cause the settling of the tine gold to its bottom and the line gold will be thrown up in the sand and the corlugations hold the sand away from the side wall as it is being quiveied and this allows water to get in around the sand which makes it soft and allows all the line gold to settle to the bottom while the sand runs forward or downwardly. Water enters the tray or trough 57 from the conduit 62 at the upper end.

When the sand reaches the end' of the tray or trough 57 it is mostly black sand and what fine gold there is goes through the outlets This sand going through the outlets enters into the pan 58 which operates thereon in the same manner as the pan 42 operates on material entering it. Between the outermost blade and the flange ot' this pan there is provided a plurality of cone teeth to Cause the sand to pack around the side walls, making a lodging place for the line gold when quit-ksilver is not used. When the sand enters the pan 69 it receives its final treatment.

It is thought that the construction, operation, utility, and advantages of this invention will now be quite apparent to those skilled in this art without a more detailed description lltl thereof. The present embodiment of the invention has been disclosed in detail merely by Way of example since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the de tails of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is :H

In a concentrator, and in combination, a concentrating pan, a rockably mounted frame,

a pin extending downwardly from the center of the pan and rotatable in the top of the frame, means for rocking the rocker and means for oscillating the pan, a plurality of 20 concentric arcuate blades in the pan, a connector on the ends of the blades, a cross member on the pan, and a stub shaft from the connector journaled in the cross member olfcenter of the pan, and means for oscillating 25 In testimony whereof I affix my signature. 30

VIRGIL P. ROE. 

